Phosphogypsum refers to the gypsum formed as a by-product of processing phosphate ore into fertilizer with sulfuric acid.In India, about 6 MT of waste gypsum such as phosphogypsum, flurogypsum etc., are being generated annually. It is necessary to set a secondary industries and recycling these waste into useful material. In the country produce nearly 4 to 5 MT of phosphogypsum as by-product about 12 fertilizer plants.Handling and disposal of phosphogypsum is not only a serious techno economic problem but creates environmental pollution and requires large area for dumping. So by using phosphogypsum as a substitute for conventional material problem of dumping waste can be solved in eco-friendly manner.
